Oil-burning system.



No. 851,953. PATENTED APR. 30, 1907. M. N. MAGRATE & J, A. TOOMEY.

OIL BURNING SYSTEM. APPLIOATION FILED SEPT. 26,1906.

UNITED s'rarns PATENT OFFICE.

MICHAEL N. MACRATE AND JOHN A. TOOMEY, OF LOS AN GELES, CALIFORNIA.

OIL-BURNING SYSTEM.

Specification of Letters Patent.

Patented April 30, 1907 "To all whom it may concern.-

Be it known that we, MICHAEL N. MAC- RATE and JOHN A. TOOMEY, bothcitizens of the United States, and both residing at Los Angeles, in thecounty of Los Angeles and State of California, have invented a new anduseful Oil-Burning System, of which the following is a specification.

This invention relates to oil burning systems and particularly to asystem in which the oil is forced under pressure to the burner and oneof the main objects of the invention is to cause the supply of oil to beautomatically cut off in the event of the burner becoming accidentallyextinguished or if the burner valve is carelessly left open and theburner has not been lighted.

Another object is to provide means for filling the main storage tankwithout the necessity of putting out the fires at the burners.

A further object is to provide a safety drain and receptacle for any oilwhich may escape from the burner.

Further objects of the invention will be brought out in the followingdescription.

The accompanying drawings illustrate the invention, and referringthereto :Figure 1 shows the preferred arrangement of the system, theautomatic safety oil shut-off device being shown in section. Fig. 2 is aside elevation partly in section of one form of burner. Fig. 3 1s asection on line m a; of Fig. 2. Fig. 4 is a vertical sectional view,enlarged, of the automatic safety shut ofi valve and adjacent mechanism.Fig.5 is a view of a ortion of the system showing a modified orm. Fig. 6is a detail section through the four way valve.

1 desi nates the main tank to which oil is delivere by a pipe 2 whichmay extend to the street or other place convenient for filling from caror tank wagon, the valve 3, when closed, prevents the outward passageof'oil when the main tank is under water pressure. A pi e 4 leads fromthe main tank 1 to an auxi iary tank 5, the pipe 4 having a valve 6. Thepipe 7 extends from the lower art of the tank 1 to a four way valve 8,Whi e a pi e 9 leads from valve 8 t0 the auxiliar tan 5. A water pipe10, which is connecte with the city water system, leads to valve 8, thepipe 10 being provided with an automatic pres sureregulating valve 11,for maintainin the pressure at any desired degree, and wlth a safetyvalve 12 WhlOh prevents any excessive pressure in the event of failureof the pressure re lating valve 11 to act properl and locate between thesafety valve 12 an pressure re ulating valve 11 is a manuall operated vave 13. The pipe 9 is provide with a check valve 14 which prevents thebackward flow of oil through pipe 9. A drain pipe 15 extends from thevalve 8 to a sewer or drain 16 which may be located either above orbelow the main tank 1. Mounted on the respective stems of valves 6 and 8are levers 17 and 18, the latter being provided with a han dle, and thetwo levers are connected by links 19 so that when. the hand lever 18 isoperated to shift the valve 8, the lever 17 is also simultaneouslyoperated to automatically open or close the valve 6.

A pipe 20 extends from the auxiliary tank 5 to an automaticallycontrolled valve 21, shown in detail in Fig. 4, which is located withina casing 22. The stem 23 of the valve carries a laterally projecting arm24-, which arm is connected to a spring 25, the other end of the springbeingv attached to the casing 22. The lower end of] the arm 24 isextended slightly beyond the stem 23 to form a detent 26, which detentis normally engaged by a ivoted latch lever 27, the outer end of theever 27 being connected to a float 28, the casing 22 having asemi-spherical pocket 29 formed in its lower wall to receive the float.The latch lever 27 normally engages the detent 26 and holds valve 21open, but when any oil escapes into the pocket 29 the float 28 is liftedwhich disengages the latch-lever 27 from the detent 26 and the springcontracts and automatically closes the valve 21 which remains closeduntil the valve is manually retracted and re-engaged with the latchlever 27. A pipe 30 leads from the valve 21 and oil burners 32 may beconnected therewith.

One form of oil burner which may be used is shown in detail in Fig. 2and com rises a cylindrical retort 33, the interior 0 which may befilled with fire brick 34 broken 1nto small chunks. A pipe 35 conducts011 from the pipe 30 to one end of the retort 33, while a pipe 36 leadsfrom the other end of the retort down to a burner tube 37 which isformed on a pan 38 located under the retort 33, the upper wall of thetube provided with. orifices for the escape of gas to be'burned Fromeach pan 38, a ipe 39 leads to the casing 22 above described Each pipe35 is provided with a valve 40 for regulatingthe burner. The drain pipeis arranged to conduct any excess of oil from the casing 22 to a recep-.

is shut and lever'lS is operated to shut oil communication of pipe 7with pipe 15 and pipe 7'and pipe to sewer 16.

tank 1 has been refilled withoil, valve 3 is .-is aga1n under the waterpressure.

valve 6 is simultaneously opened so that 1 after tank l is filled oilwill flow into the auxiliary tank 5. As soon as both tanks are filled,the valve 3 isclosed and as pipes 10 and 7 are in communication andvalve 6 is open, by opening valve 13 water under pressure passes throughpipe 10 to pipe 7 and into the lower part of tank 1, thus placing theoil'in both tanks 1 and 5 under the pressure of the water which forcesoil up through ipe and through valve 21 to pipe 30, ii'om which the oilis delivered through pipes to the respective burners. enters-the retort33 of a burner is formed into gas or vapor by the heat from the flameswhich are burning under the retort and the gas generated in the retortis conveyed water pressure while the main tank 1 is being filled and to'accom lish this the lever 18 is operated to close va ve 6 and placepipe 10 in communication with pipe 9, and to place pipe 7 incommunication with pipe 15, whereupon the pressure from the water inpipe 1.0 is transferred directly to the auxiliary tank 5 through thepipe 9, the check valve 14 permitting the movement of water in thisdirection and-thus the burners are kept su plied with oil under the samepressure whi e the tankl' isbeing refilled. In refilling the tank 1, thevalve .3 is opened and the pressure of'the oil in entering forces thewater which has accumulated in the tank 1, out through As soon asshutandlever 18 is opened to open valve 6 and again place pipe 10 incommunication with pipe 7, whereupon the oil in both tanks Water whichgets into tank 5 during the refilling operation, sinks down through pipe4 into tank lassoon'as valve 6 is opened afterthe completion of therefilling operation.

a it through carelessness or ignorance 01'- accident, aburner is out andits valve 10 is open the oil which escapes from the burner will' flowthrough pipe39 into the casing 22, and but a slight amount of oil thusescaping is necessary to lift the float 28, whereupon the latchlever; 27releases detent 26 and allows the valve 28 to quickly shut tight, whichpositively prevents further flow of oil to the burner'and thus preventsaccident.

The oil, as it What little excess of oil may be present in' the burnerandcasing 22, after the valve 21 closes," finds its way out throughpipe.45

and is caught by receptacle 46.

Fig. 5' shows another form of connectionin which automatic co-operationof valves 6 and 8 is dispensed with, and a valve 8 is substituted i'orvalve 8, and a plain check valve substituted for the valve 6. When thevalve 8 is in one position the pressure isthrough pipe 7 into the tank1, forcing the oil from tankl up ,past valve 50 into tank 5 and'thenceto the burners, while when the valve 8 is in the other position,communication is shut ofl between pipe 10 and 7 and pressure goes frompipe 10 through pipe 9 to auxiliary tank 5. At the same time pipe 7 isin communication with pipe 15 so that water from the tank 1 may passthrough those pipes to the sewer.

What we claim is 1. In an oil burning system, a main tank, 7

an auxiliary tank, an oil burner, a circula tory system which includesthe tanks and burner, pressure means for maintaining a flow of oilthrough the circulatory system, a drain connection normally cut off fromthe main tank, and means controlled by asingle device for cutting outthe main tank, but not the auxiliary tank, from the circulatory system,and connecting the main tank with'the drain connection to enable theevacuation of the main tank of the pressure medlum and its replenishmentwith oil without interrupt- IOO ing theservice of oil under pressure tothe burner.

2. In an Oll burning system, a main tank,

an auxiliary tank, a pipe connecting said' tanks, a valve in said pipe,a four way valve, a pipe from the four way valve to the main tank, apipe from the four way valve to the auxiliary tank, a check valve inthe, latter pipe, a drain pipe leading from the four way valve, a pipefrom the four way valve connected with a water pressure system, aburner,and a pipe 7 from the auxiliary tank to the burner.

3. In an oil burning system, a main tank, an auxiliary tank, a pipeconnecting said tanks, a valve in said pipe, a four way valve, a pipefrom the four way valve to themain tank, a pipe from the four way valveto the auxiliary tank, a check valve in the latter pipe, a drain pipeleadingfrom the four-way valve,

a pipe from the fourway valve connected 4. In an oil burning system, amain tank,

anauxiliary tank, a pipe connecting said tanks, a valve in said pipe,afour 'way valve, a-pipe from the four way valve to the main tank, apipe from the four way valve to the l auxiliary tank, a check valve inthe latter i pipe, a drain pipe leading from the four way valve, a pipefrom the four way valve connected with a water pressure system, a lburner, and a pipe from the auxiliary tank to the burner, and means forautomatically opening said first valve when the four wayv valve isoperated to place the water pressure pipe in communication with the maintank, I and to automatically close said first valve when the four wayvalve is operated to place the main tank in communication with the drainpipe and the water pressure pipe in communication with the auxiliarytank.

5. In an oil burning system, a main tank, an auxiliary tank, a pipeconnecting said tanks, avalve in said pipe, a four way valve,

a pipe from the four wayvalveflto the main tank, apipe from the fourwayvalve to the auxiliary tank, a checkvalve in the latter pipe, a drainpipe leading jrom the four way valve, 11 pipe from the fcfir way valveconnected with a water pressure system, a burner and a pipe from t eauxiliary tank to the burner, a lever on the first valve, a lever on thefour way valve, and links connecting the two levers.

In testimony whereof, we have hereunto set our hands at Los Angeles,California, this 19th day of September, 1906.

MICHAEL N. MACRATE.

JOHN A. TOOMEY. In presence of GEORGE T. HACKLEY, FRANK L. A. GRAHAM.

